Machining of a multi-stage axial pump housing

Galbiati Group recently performed the machining of a horizontal multi-stage pump in carbon steel (A216 WCB), which is composed of a body that is divided axially. The pump body is in fact composed of a lower half-body and an upper one.

Both half-bodies were machined separately and certificated through a final inspection performed with a Zeiss three-dimensional measuring machine.

The pump was designed according to API 10^th edition for use in the petrochemical industry and in the plant, it will pump oil at a flow rate of 510 m ³/h with a prevalence of 689 m (this is equivalent to a capacity of 420 t / h with a differential pressure of 55.63 bar).

The pump housing is designed to withstand a pressure of 90 bar at 55 degrees centigrade and has been tested in water, with positive results, at a pressure of 135 bar.

Technical data:

• Material: WCB
• Length: 3694 mm
• Width: 1400 mm
• Height: 1330 mm
• Max internal diameter of bore: 355 H7, Ra = 3.2
• Max concentricity tolerance: 0.02 on a wheelbase 3087